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Maxim > Products > [Wireless and RF]  [Audio]  [Automotive] 
MAX2140
Complete SDARS Receiver


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 212kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX2140 complete receiver is designed for satellite digital audio radio services (SDARS). The device includes a fully monolithic VCO and only needs a SAW at the IF and a crystal to generate the reference frequency.

To form a complete SDARS radio, the MAX2140 requires only a low-noise amplifier (LNA), which can be controlled by a baseband controller. The small number of external components needed makes the MAX2140- based platform the lowest cost and the smallest solution for SDARS.

The receiver includes a self-contained RF AGC loop and baseband-controlled IF AGC loop, effectively providing a total dynamic range of over 92dB.

Channel selectivity is ensured by the SAW filter and by on-chip monolithic lowpass filters.

The fractional-N PLL allows a very small frequency step, making possible the implementation of an AFC loop. Additionally, the reference is provided by an external XTAL and on-chip oscillator. A reference buffer output is also provided.

A 2-wire interface (I²C bus compatible) programs the circuit for a wide variety of conditions, providing features such as:
  • Programmable gains
  • Lowpass filters tuning
  • Individual functional block shutdown
The MAX2140 minimizes the requirement on the baseband controller. No compensation or calibration procedures are required. The device is available in a 7mm x 7mm 44-pin thin QFN package.

An evaluation kit is available:  MAX2140EVKIT  

Key Features   Applications/Uses
  • Integrated Receiver, Requires Only One SAW Filter
  • Self-Contained RF AGC Loop
  • Differential I/Q Interface
  • Complete Integrated Frequency Generation
  • Bias Supply for External LNAs
  • Overcurrent Protection
  • Low-Power Standby Mode
  • Very Small 44-Pin Thin QFN Package

 
  		• 2.4GHz ISM Radios
  		• Satellite Digital Audio Radio Services (SDARS)

    Key Specifications:  Digital Radio Receivers
    Part Number Applications Solutions Band/ Freq.
    (MHz)    		 Features Footprint
    (mm x mm)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Industry Qualified
    max w/pins
    MAX2140 
    2.4GHz ISM
    SDARS
    Satellite
    		 SAT 2200 to 2500
    44-Pin Thin QFN
    Bias Supply For External LNAs
    Differential I/Q Interface
    Integrated Frac-N PLL
    Integrated Receiver
    Low Supply Current
    Overcurrent Protection
    Requires Only One SAW Filter
    		 7.0 x 7.0
    TQFN/44
    		 50
    Automotive - AECQ100
    Automotive - General
    See All Digital Radio Receivers (4)

    Diagram
    MAX2140: Block Diagram
    Block Diagram

    Application Notes
  		• Application Note 3704: Designing to Protect MAX2140's Internal ESD Diode During Nonstandard Operation * - max2140
  		• Application Note 3851: SDARS MAX2140 XM Radio Tuner Solution - MAX2140

    Evaluation Kits
  		• MAX2140EVKIT

    Design Guides
  		• Wireless (PDF)
  		• Audio (PDF)

    Reliability Reports
  		• Reliability Report: AEC-MAX2140ETH_B.pdf MAX2140ETH.pdf
  		• Show FIT data for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-4 of 4

    MAX2140 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX2140ETH  
    		Active TQFN;44 pin;50 mm²
    Outline Drawing: 21-0144 (PDF)
    Land Pattern: 90-0127 (PDF)
    Use pkgcode/variation: T4477-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX2140ETH-T    
    		Active TQFN;44 pin;50 mm²
    Outline Drawing: 21-0144 (PDF)
    Land Pattern: 90-0127 (PDF)
    Use pkgcode/variation: T4477-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX2140ETH+  
    		Active TQFN;44 pin;50 mm²
    Outline Drawing: 21-0144 (PDF)
    Land Pattern: 90-0127 (PDF)
    Use pkgcode/variation: T4477+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX2140ETH+T    
    		Active TQFN;44 pin;50 mm²
    Outline Drawing: 21-0144 (PDF)
    Land Pattern: 90-0127 (PDF)
    Use pkgcode/variation: T4477+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Product Ad: MAX2140

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     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
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    Document Ref.: 19-3123; Rev 3; 2005-12-07
    This page last modified: 2009-10-08


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